From nobody Wed May 20 14:35:36 2026 X-Original-To: dev-commits-src-main@mlmmj.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mlmmj.nyi.freebsd.org (Postfix) with ESMTP id 4gLDbr6fjGz6dtBC for ; Wed, 20 May 2026 14:35:36 +0000 (UTC) (envelope-from git@FreeBSD.org) Received: from mxrelay.nyi.freebsd.org (mxrelay.nyi.freebsd.org [IPv6:2610:1c1:1:606c::19:3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "mxrelay.nyi.freebsd.org", Issuer "R13" (not verified)) by mx1.freebsd.org (Postfix) with ESMTPS id 4gLDbr5mbjz3dLK for ; Wed, 20 May 2026 14:35:36 +0000 (UTC) (envelope-from git@FreeBSD.org) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=freebsd.org; s=dkim; t=1779287736; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding; bh=e91t3FpIfRlQgy1lvn8JTDUFClx3jNHCO56T1m+0X04=; b=ygVJq0dsYyV2QxpiKLrvTDmG9fX9lz+34wqOzJyMyicvYpP7vK/rCP904biaRg4vIZukyg trFpYpICz7AXA01fOC43RUeZf7PnAm8SGQ3jCed1Zkh/FkBy2zNWQLngsv48CMYqBgoEg5 MgdTNPinIdb8QPtrmic8/vp7bXxCrYaKXPFfX9FcRrMkoESTJ/IznuumYcV1s0uyyKsh6s lWoNEdqe349sdbdxPJdIaNlqc6H8k7UQWYByvk6HMmRngWqEqMcfk8o8SrrwkdQx6+KqFr lCuEHJEi7Hsw7R2FVRIcz3A3cdMDmN5XSW9kfHmGsE6a3Az9sXH61InKgdf9zg== ARC-Seal: i=1; s=dkim; d=freebsd.org; t=1779287736; a=rsa-sha256; cv=none; b=A62P7eweMvT24G3yXIVAy6+w7y0D1giyc+C7gbNtsK5lLoiaG9zILAVddZStPJHhr3IJGP 34qO4iWlyVJM4ZwrfGODehQcQ90BesRpRURpUIlPkzJgGDG5PrVFhxaPu067wuwzJTlwYu 994I65cFgWu6ufyDBNfFpxDt6jeGgU8qy1j16Z682bGvP7OqekME5bZKjLoA5wsDsBKZAz Mcbn54dk1ND2SE9sIYRaXQBH60OtfqRp9waOPcyeGTS0S4IcEQUqUDPKNBEqOCHjFRdvWf 06ISkxQBuJUYrfeYB0Xgr8+VuElR782wxhhuDu6pfZeLPrExxc13F4BCNtS/Xg== ARC-Authentication-Results: i=1; mx1.freebsd.org; none ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=freebsd.org; s=dkim; t=1779287736; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding; bh=e91t3FpIfRlQgy1lvn8JTDUFClx3jNHCO56T1m+0X04=; b=X7qQQLJMLsktk9l5bVsXqM0XCRAqcbQQUmEpmcGhfsfhX5klqIczHlUd8byoyMYTJaHhxs EJCVu1V+bZeVjC0k3sR2CBbnURDLvDooMBzKJTYmhce32ThFaWe9X/tbgdCU1kNKLrMwfa 9tPH5kO8CnqPV3X5pFgyYs2M9U7cJeWhG/L0BmX1NhcZ6rLGYDguriIQGatcEsxqRQdHdJ 9WI+GOlASDWZLoloic3UxBalkPuM/S2F1gKfvZE4/lkf+r/89KoxQd/zSknZjauUnCevMo FDKiGfGVRpI0MK9m2kj2CNbcUQVzMRGlrprT9t2wNgjmMVKr83RqqcjG2A3vKQ== Received: from gitrepo.freebsd.org (gitrepo.freebsd.org [IPv6:2610:1c1:1:6068::e6a:5]) by mxrelay.nyi.freebsd.org (Postfix) with ESMTP id 4gLDbr5MYDz154B for ; Wed, 20 May 2026 14:35:36 +0000 (UTC) (envelope-from git@FreeBSD.org) Received: from git (uid 1279) (envelope-from git@FreeBSD.org) id 3de79 by gitrepo.freebsd.org (DragonFly Mail Agent v0.13+ on gitrepo.freebsd.org); Wed, 20 May 2026 14:35:36 +0000 To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-main@FreeBSD.org Cc: Zishun Yi From: Mark Johnston Subject: git: b36fd09a834b - main - amd64/vmparam: Fix KASAN shadow map size in comment List-Id: Commit messages for the main branch of the src repository List-Archive: https://lists.freebsd.org/archives/dev-commits-src-main List-Help: List-Post: List-Subscribe: List-Unsubscribe: X-BeenThere: dev-commits-src-main@freebsd.org Sender: owner-dev-commits-src-main@FreeBSD.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit X-Git-Committer: markj X-Git-Repository: src X-Git-Refname: refs/heads/main X-Git-Reftype: branch X-Git-Commit: b36fd09a834be586fbc1630294e17554e1f76175 Auto-Submitted: auto-generated Date: Wed, 20 May 2026 14:35:36 +0000 Message-Id: <6a0dc6b8.3de79.1a5e52c4@gitrepo.freebsd.org> The branch main has been updated by markj: URL: https://cgit.FreeBSD.org/src/commit/?id=b36fd09a834be586fbc1630294e17554e1f76175 commit b36fd09a834be586fbc1630294e17554e1f76175 Author: Zishun Yi AuthorDate: 2026-05-20 14:34:08 +0000 Commit: Mark Johnston CommitDate: 2026-05-20 14:35:15 +0000 amd64/vmparam: Fix KASAN shadow map size in comment The address range 0xfffff78000000000 - 0xfffff7bfffffffff spans exactly 256GB (0x4000000000 bytes), not 512GB. For a 2TB kernel map, based on the KASAN 1:8 shadow map ratio, the required shadow map size is indeed 256GB. The current comment incorrectly states 512GB, which can be misleading and cause confusion. Reviewed by: markj MFC after: 1 week Differential Revision: https://reviews.freebsd.org/D57129 --- sys/amd64/include/vmparam.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/sys/amd64/include/vmparam.h b/sys/amd64/include/vmparam.h index 2914a204b2ef..1825c431f9f7 100644 --- a/sys/amd64/include/vmparam.h +++ b/sys/amd64/include/vmparam.h @@ -171,7 +171,7 @@ * 0xffff808000000000 - 0xffff847fffffffff large map (can be tuned up) * 0xffff848000000000 - 0xfffff77fffffffff unused (large map extends there) * 0xfffff60000000000 - 0xfffff7ffffffffff 2TB KMSAN origin map, optional - * 0xfffff78000000000 - 0xfffff7bfffffffff 512GB KASAN shadow map, optional + * 0xfffff78000000000 - 0xfffff7bfffffffff 256GB KASAN shadow map, optional * 0xfffff80000000000 - 0xfffffbffffffffff 4TB direct map * 0xfffffc0000000000 - 0xfffffdffffffffff 2TB KMSAN shadow map, optional * 0xfffffe0000000000 - 0xffffffffffffffff 2TB kernel map @@ -185,7 +185,7 @@ * 0xff41000000000000 - 0xffff7fffffffffff unused * 0xffff800000000000 - 0xfffff5ffffffffff unused (start of kernel pml4 entry) * 0xfffff60000000000 - 0xfffff7ffffffffff 2TB KMSAN origin map, optional - * 0xfffff78000000000 - 0xfffff7bfffffffff 512GB KASAN shadow map, optional + * 0xfffff78000000000 - 0xfffff7bfffffffff 256GB KASAN shadow map, optional * 0xfffff80000000000 - 0xfffffbffffffffff 4TB unused * 0xfffffc0000000000 - 0xfffffdffffffffff 2TB KMSAN shadow map, optional * 0xfffffe0000000000 - 0xffffffffffffffff 2TB kernel map